JP6748931B1 - Rotation detector - Google Patents

Rotation detector Download PDF

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JP6748931B1
JP6748931B1 JP2020028019A JP2020028019A JP6748931B1 JP 6748931 B1 JP6748931 B1 JP 6748931B1 JP 2020028019 A JP2020028019 A JP 2020028019A JP 2020028019 A JP2020028019 A JP 2020028019A JP 6748931 B1 JP6748931 B1 JP 6748931B1
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magnetic
detection unit
detection
sensor
facing surface
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JP2020169977A (en
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雅明 今堀
雅明 今堀
和彦 冨田
和彦 冨田
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Hitachi Metals Ltd
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Hitachi Metals Ltd
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Priority to US16/834,296 priority Critical patent/US11378417B2/en
Priority to CN202020450188.0U priority patent/CN211905415U/en
Priority to JP2020124127A priority patent/JP7310744B2/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/07—Hall effect devices
    • G01R33/072—Constructional adaptation of the sensor to specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/02—Bearings or suspensions for moving parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P1/00—Details of instruments
    • G01P1/02—Housings
    • G01P1/026—Housings for speed measuring devices, e.g. pulse generator
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/443—Devices characterised by the use of electric or magnetic means for measuring angular speed mounted in bearings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/487—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by rotating magnets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/42—Devices characterised by the use of electric or magnetic means
    • G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
    • G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
    • G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
    • G01P3/488—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals delivered by variable reluctance detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/09—Magnetoresistive devices
    • G01R33/091—Constructional adaptation of the sensor to specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/142—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage using Hall-effect devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/07—Hall effect devices

Abstract

【課題】検出感度を向上でき、かつハウジング部の樹脂モールドの際に成形不良が発生しにくい回転検出装置を提供する。【解決手段】センサ部３は、被検出部材としての磁気エンコーダ２からの磁界を検出する磁気検出素子を含む板状の検出部３００、及び検出部３００から延出された接続端子３０１を有し、検出部３００がセンサ部３と被検出部材２との対向方向に重なるように配置されている２つの磁気センサ３０と、２つの磁気センサ３０を一括して被覆するように設けられた樹脂モールドからなり、磁気エンコーダ２と対向する対向面３１４を有するハウジング部３１と、を有し、２つの磁気センサ３０のうち、磁気エンコーダ２側に配置されている第１磁気センサ３０ａの検出部３００が、対向面３１４に対して傾くように配置されている。【選択図】図３PROBLEM TO BE SOLVED: To provide a rotation detection device capable of improving detection sensitivity and less likely to cause molding defects when molding a resin of a housing portion. SOLUTION: A sensor unit 3 has a plate-shaped detection unit 300 including a magnetic detection element that detects a magnetic field from a magnetic encoder 2 as a member to be detected, and a connection terminal 301 extending from the detection unit 300. , A resin mold provided so as to collectively cover two magnetic sensors 30 and two magnetic sensors 30 arranged so that the detection unit 300 overlaps the sensor unit 3 and the member to be detected 2 in the opposite direction. A housing unit 31 having a facing surface 314 facing the magnetic encoder 2 and a detection unit 300 of the first magnetic sensor 30a arranged on the magnetic encoder 2 side of the two magnetic sensors 30. , Arranged so as to be inclined with respect to the facing surface 314. [Selection diagram] Fig. 3

Description

本発明は、回転検出装置に関する。 The present invention relates to a rotation detecting device.

従来、例えば車輪の軸受ユニットに用いられ、車輪と共に回転する回転部材の回転速度を検出する回転検出装置が知られている。回転検出装置では、回転部材に取り付けた磁石（被検出部材という）による磁界の変化を、センサ部に設けられた磁気センサで検出することにより、回転部材の回転速度を検出する。 Conventionally, there is known a rotation detecting device which is used, for example, in a bearing unit of a wheel and which detects a rotation speed of a rotating member that rotates together with the wheel. In the rotation detecting device, the rotation speed of the rotating member is detected by detecting a change in the magnetic field caused by a magnet (referred to as a detected member) attached to the rotating member by a magnetic sensor provided in the sensor unit.

特許文献１では、冗長化のために、２つの磁気センサをセンサ部に内蔵した回転検出装置が開示されている。両磁気センサは、樹脂モールドからなるハウジング部に覆われており、このハウジング部によって、外部からの水の浸入等が抑制されている。 Patent Document 1 discloses a rotation detection device in which two magnetic sensors are incorporated in a sensor unit for redundancy. Both magnetic sensors are covered with a housing part made of a resin mold, and this housing part suppresses intrusion of water from the outside.

特表２０１８−５０５４１７号公報Japanese Patent Publication No. 2018-505417

ところで、回転検出装置において検出感度を向上させるためには、磁気センサをなるべく被検出部材に近付けることが望まれる。センサ部を被検出部材に近付けることは限界があるため、センサ部においても、なるべくハウジング部の表面（被検出部材と対向する側の表面）に近い位置に磁気センサを配置することが望まれる。 By the way, in order to improve the detection sensitivity in the rotation detection device, it is desired that the magnetic sensor be as close as possible to the detected member. Since there is a limit to bringing the sensor unit close to the member to be detected, it is desirable to arrange the magnetic sensor in the position as close as possible to the surface of the housing unit (the surface on the side facing the member to be detected).

しかしながら、ハウジング部の表面に近い位置に磁気センサを配置すると、樹脂モールドの際に用いる金型と磁気センサとの間隔が狭くなるために、樹脂モールドの際に金型と磁気センサとの間に樹脂が入り込まず成形不良が発生し、磁気センサの一部がハウジング部から露出してしまう等の不具合が生じる場合があった。 However, when the magnetic sensor is placed near the surface of the housing, the gap between the mold and the magnetic sensor used for resin molding becomes narrower. Therefore, when the resin is molded, the space between the mold and the magnetic sensor is reduced. In some cases, the resin did not enter and molding failure occurred, and a part of the magnetic sensor was exposed from the housing.

そこで、本発明は、検出感度を向上でき、かつハウジング部の樹脂モールドの際に成形不良が発生しにくい回転検出装置を提供することを目的とする。 Therefore, it is an object of the present invention to provide a rotation detecting device which can improve the detection sensitivity and is less likely to cause a molding failure during resin molding of a housing part.

本発明は、上記課題を解決することを目的として、回転部材に取り付けられており、前記回転部材の回転軸を中心した周方向に沿って複数の磁極が設けられている被検出部材と、前記回転部材の回転に伴って回転しない固定部材に取り付けられており、前記被検出部材と対向して配置されているセンサ部と、を備え、前記センサ部は、前記被検出部材からの磁界を検出する磁気検出素子を含む板状の検出部と、前記検出部から延出された接続端子と、を有し、前記検出部が前記センサ部と前記被検出部材との対向方向に重なるように配置されている２つの磁気センサと、前記２つの磁気センサを一括して被覆するように設けられた樹脂モールドからなり、前記被検出部材と対向する対向面を有するハウジング部と、を有し、前記２つの磁気センサのうち、前記被検出部材側に配置されている第１磁気センサの前記検出部が、前記対向面に対して傾くように配置されている、回転検出装置を提供する。 The present invention, for the purpose of solving the above-mentioned problems, is attached to a rotating member, and a detected member provided with a plurality of magnetic poles along a circumferential direction around a rotation axis of the rotating member, A sensor unit that is attached to a fixed member that does not rotate with the rotation of the rotating member, and that is disposed so as to face the member to be detected, the sensor unit detecting a magnetic field from the member to be detected. Having a plate-shaped detection unit including a magnetic detection element, and a connection terminal extended from the detection unit, the detection unit is arranged so as to overlap in the opposing direction of the sensor unit and the detected member. And a housing part formed of a resin mold provided so as to cover the two magnetic sensors collectively and having a facing surface facing the detected member. There is provided a rotation detection device in which, of the two magnetic sensors, the detection unit of the first magnetic sensor arranged on the detected member side is arranged so as to be inclined with respect to the facing surface.

本発明によれば、検出感度を向上でき、かつハウジング部の樹脂モールドの際に成形不良が発生しにくい回転検出装置を提供できる。 According to the present invention, it is possible to provide a rotation detection device which can improve detection sensitivity and is less likely to cause molding failure during resin molding of a housing part.

本発明の一実施の形態に係る回転検出装置、及びこの回転検出装置を有する車両用の車輪軸受装置の構成例を示す断面図である。It is a sectional view showing an example of composition of a rotation detecting device concerning one embodiment of the present invention, and a wheel bearing device for vehicles which has this rotation detecting device. センサ部の斜視図である。It is a perspective view of a sensor part. （ａ）はセンサ部の破断面図、（ｂ）は第１磁気センサと電線の平面図である。(A) is a fractured sectional view of a sensor part, (b) is a top view of a 1st magnetic sensor and an electric wire. 樹脂モールドの際の樹脂の流れを説明する説明図である。It is explanatory drawing explaining the flow of resin at the time of resin molding.

［実施の形態］
以下、本発明の実施の形態を添付図面にしたがって説明する。 [Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

（車輪軸受装置１０の構成）
図１は、本実施の形態に係る回転検出装置、及びこの回転検出装置を有する車両用の車輪軸受装置の構成例を示す断面図である。 (Structure of Wheel Bearing Device 10)
FIG. 1 is a sectional view showing a configuration example of a rotation detection device according to the present embodiment and a wheel bearing device for a vehicle having this rotation detection device.

車輪軸受装置１０は、円筒状の本体部１１０、及び車輪が取り付けられるフランジ部１１１を有する回転部材としての内輪１１と、内輪１１の本体部１１０の外周側に配置された外輪１２と、内輪１１の外周面１１ａに形成された一対の軌道面１１ｂ，１１ｂ、及び外輪１２の内周面１２ａに形成された一対の軌道面１２ｂ，１２ｂの間に配置され、両軌道面１１ｂ，１２ｂを転動する球状の複数の転動体１３と、内輪１１の外輪１２に対する回転速度（すなわち車輪速）を検出する回転検出装置１とを備えている。 The wheel bearing device 10 includes an inner ring 11 as a rotating member having a cylindrical main body 110 and a flange 111 to which a wheel is attached, an outer ring 12 arranged on the outer peripheral side of the main body 110 of the inner ring 11, and an inner ring 11 Is arranged between a pair of raceway surfaces 11b, 11b formed on the outer peripheral surface 11a of the outer ring 12 and a pair of raceway surfaces 12b, 12b formed on the inner peripheral surface 12a of the outer ring 12, and rolls on both raceway surfaces 11b, 12b. It has a plurality of spherical rolling elements 13 and a rotation detection device 1 for detecting the rotation speed (that is, wheel speed) of the inner ring 11 with respect to the outer ring 12.

内輪１１の本体部１１０の中心部には、その回転軸線Ｏに沿って貫通孔が形成され、この貫通孔の内面には、図示しないドライブシャフトを連結するためのスプライン嵌合部１１０ａが形成されている。また、内輪１１の一対の軌道面１１ｂ，１１ｂは、周方向延びるように、互いに平行に形成されている。 A through hole is formed at the center of the main body 110 of the inner ring 11 along the rotation axis O, and a spline fitting portion 110a for connecting a drive shaft (not shown) is formed on the inner surface of the through hole. ing. Further, the pair of raceway surfaces 11b, 11b of the inner ring 11 are formed parallel to each other so as to extend in the circumferential direction.

内輪１１のフランジ部１１１は、本体部１１０の径方向外側に突出して本体部１１０と一体に設けられている。フランジ部１１１には、図示しない車輪を取り付けるためのボルトが圧入される複数の貫通孔１１１ａが形成されている。 The flange portion 111 of the inner ring 11 is provided integrally with the main body portion 110 so as to project radially outward of the main body portion 110. Plural through holes 111a into which bolts for mounting wheels (not shown) are press-fitted are formed in the flange portion 111.

外輪１２は、円筒状に形成され、車体に連結されたナックル９に複数のボルト９１（図１には１つのみ示す）によって固定されている。ナックル９は、内輪１１を回転可能に支持する固定部材の一例である。外輪１２の一対の軌道面１２ｂ，１２ｂは、内輪１１の一対の軌道面１１ｂ，１１ｂに対向して周方向延びるように、互いに平行に形成されている。外輪１２における内輪１１のフランジ部１１１側の端部には、内輪１１との間にシール１４が配置されている。 The outer ring 12 is formed in a cylindrical shape and is fixed to the knuckle 9 connected to the vehicle body by a plurality of bolts 91 (only one is shown in FIG. 1). The knuckle 9 is an example of a fixing member that rotatably supports the inner ring 11. The pair of raceway surfaces 12b, 12b of the outer ring 12 are formed parallel to each other so as to extend in the circumferential direction facing the pair of raceway surfaces 11b, 11b of the inner ring 11. A seal 14 is arranged between the inner ring 11 and the end of the outer ring 12 on the flange 111 side of the inner ring 11.

ナックル９には、次に説明する回転検出装置１のセンサ部３を保持するための保持孔９０が形成されている。保持孔９０は、中心軸に直交する断面の形状が円形であり、ナックル９を回転軸線Ｏの径方向に貫通している。 The knuckle 9 is formed with a holding hole 90 for holding the sensor portion 3 of the rotation detecting device 1 described below. The holding hole 90 has a circular cross section orthogonal to the central axis and penetrates the knuckle 9 in the radial direction of the rotation axis O.

（回転検出装置１の説明）
図２は、センサ部の斜視図である。また、図３（ａ）はセンサ部の破断面図、図３（ｂ）は第１磁気センサと電線の平面図である。 (Description of the rotation detection device 1)
FIG. 2 is a perspective view of the sensor unit. Further, FIG. 3A is a broken sectional view of the sensor portion, and FIG. 3B is a plan view of the first magnetic sensor and the electric wire.

図１〜３に示すように、回転検出装置１は、回転部材としての内輪１１に取り付けられており、内輪１１の回転軸（回転軸線Ｏ）を中心とした周方向に沿って複数の磁極（不図示）が設けられている被検出部材としての磁気エンコーダ２と、内輪１１の回転に伴って回転しない固定部材としてのナックル９に取り付けられており、磁気エンコーダ２と対向して配置されているセンサ部３と、を備えている。 As shown in FIGS. 1 to 3, the rotation detecting device 1 is attached to an inner ring 11 as a rotating member, and has a plurality of magnetic poles (along the circumferential direction about the rotation axis (rotation axis O) of the inner ring 11). (Not shown) is attached to the magnetic encoder 2 as a detected member and the knuckle 9 as a fixed member that does not rotate with the rotation of the inner ring 11, and is arranged to face the magnetic encoder 2. The sensor unit 3 is provided.

磁気エンコーダ２は、回転軸線Ｏに平行な方向の厚みを有する円環状に形成されている。この磁気エンコーダ２は、内輪１１の外周面１１ａに固定された支持部材１１２に支持され、内輪１１と一体回転するように取り付けられている。また、磁気エンコーダ２は、センサ部３に対向して周方向に沿って交互に配列されたＮ磁極とＳ磁極とを有している。 The magnetic encoder 2 is formed in an annular shape having a thickness in a direction parallel to the rotation axis O. The magnetic encoder 2 is supported by a support member 112 fixed to the outer peripheral surface 11 a of the inner ring 11 and attached so as to rotate integrally with the inner ring 11. Further, the magnetic encoder 2 has N magnetic poles and S magnetic poles facing the sensor unit 3 and arranged alternately along the circumferential direction.

センサ部３は、ケーブル４の端部に設けられている。ケーブル４の端部にセンサ部３を設けたものが、センサ付きケーブル１００である。本実施の形態では、磁気エンコーダ２とセンサ部３の先端部の側面（後述する対向面３１４）とが、回転軸線Ｏに平行な軸方向に対向している。 The sensor unit 3 is provided at the end of the cable 4. The sensor-equipped cable 100 is provided with the sensor unit 3 at the end of the cable 4. In the present embodiment, the magnetic encoder 2 and the side surface (opposing surface 314 described later) of the tip portion of the sensor unit 3 face each other in the axial direction parallel to the rotation axis O.

ケーブル４は、２つの磁気センサ３０に対応した２対の電線４１を有している。各電線４１は、銅等の良導電性の素線を撚り合わせた撚線導体からなる中心導体４１ａと、中心導体４１ａの外周に被覆されており、架橋ポリエチレン等の絶縁性の樹脂からなる絶縁体４１ｂと、を有している。また、ケーブル４は、２対（４本）の電線４１を一括して覆うシース４２をさらに有している。 The cable 4 has two pairs of electric wires 41 corresponding to the two magnetic sensors 30. Each electric wire 41 is covered with a central conductor 41a made of a stranded wire conductor in which strands of good conductivity such as copper are twisted and an outer periphery of the central conductor 41a, and is made of an insulating resin such as crosslinked polyethylene. And a body 41b. The cable 4 further includes a sheath 42 that collectively covers two pairs (four) of the electric wires 41.

ケーブル４の端部においては、シース４２から２対の電線４１が露出され、さらに電線４１の端部において、絶縁体４１ｂから中心導体４１ａが露出されている。絶縁体４１ｂから露出された中心導体４１ａは、対応する磁気センサ３０の接続端子３０１に、溶接により電気的に接続されている。本実施の形態では、中心導体４１ａの素線同士を接合（結合）して中心導体４１ａの端部に直線状の接合部４１１を形成した後、当該接合部４１１を接続端子３０１の端部に抵抗溶接することで、中心導体４１ａと接続端子３０１とを接続した。 At the end of the cable 4, two pairs of electric wires 41 are exposed from the sheath 42, and at the end of the electric wire 41, the center conductor 41a is exposed from the insulator 41b. The central conductor 41a exposed from the insulator 41b is electrically connected to the corresponding connection terminal 301 of the magnetic sensor 30 by welding. In the present embodiment, after the strands of the central conductor 41a are joined (joined) to each other to form the linear joint 411 at the end of the center conductor 41a, the joint 411 is connected to the end of the connection terminal 301. The center conductor 41a and the connection terminal 301 were connected by resistance welding.

本実施の形態に係る回転検出装置１では、センサ部３は、２つの磁気センサ３０と、２つの磁気センサ３０を一括して被覆するように設けられた樹脂モールドからなるハウジング部３１と、を有している。 In the rotation detecting device 1 according to the present embodiment, the sensor unit 3 includes two magnetic sensors 30 and a housing unit 31 formed of a resin mold so as to cover the two magnetic sensors 30 collectively. Have

磁気センサ３０は、磁気エンコーダ２からの磁界を検出する磁気検出素子（不図示）を含む板状の検出部３００と、検出部３００から延出された一対の接続端子３０１と、を有している。本実施の形態では、磁気検出素子は、ＧＭＲ（Giant Magneto Resistive effect）素子からなる。なお、磁気検出素子としては、ＡＭＲ（Anisotropic Magneto Resistive）素子、ＴＭＲ（Tunneling Magneto Resistive）素子、ホール素子等を用いることもできる。 The magnetic sensor 30 includes a plate-shaped detection unit 300 including a magnetic detection element (not shown) that detects a magnetic field from the magnetic encoder 2, and a pair of connection terminals 301 extended from the detection unit 300. There is. In the present embodiment, the magnetic detection element is a GMR (Giant Magneto Resistive effect) element. As the magnetic detection element, an AMR (Anisotropic Magneto Resistive) element, a TMR (Tunneling Magneto Resistive) element, a Hall element or the like can be used.

検出部３００は、磁気エンコーダ２からの磁界を検出する磁気検出素子と、磁気検出素子から出力された信号を処理する信号処理回路（不図示）と、磁気検出素子と信号処理回路とを一括して覆う覆い体としての樹脂モールド３００ａと、を有している。検出部３００は、平面視で略長方形（長方形の４つの角部のうち１つが面取りされた形状）の板状に形成されている。 The detection unit 300 includes a magnetic detection element that detects a magnetic field from the magnetic encoder 2, a signal processing circuit (not shown) that processes a signal output from the magnetic detection element, a magnetic detection element, and a signal processing circuit. And a resin mold 300a as a cover body for covering. The detection unit 300 is formed in a substantially rectangular plate shape (a shape in which one of the four corners of the rectangle is chamfered) in a plan view.

一対の接続端子３０１は、検出部３００の一方の長辺（面取りされた角部に接続されていない側の長辺）から当該長辺と垂直な方向に延出されており、両接続端子３０１は互いに平行に形成されている。本実施の形態では、両接続端子３０１は帯状（細長い板状）に形成されており、その先端部（検出部３００と反対側の端部）には、対応する電線４１の中心導体４１ａ（接合部４１１）が電気的に接続されている。 The pair of connection terminals 301 extend from one long side of the detection unit 300 (the long side on the side not connected to the chamfered corner) in a direction perpendicular to the long side. Are formed parallel to each other. In the present embodiment, both connection terminals 301 are formed in a strip shape (elongate plate shape), and the tip end portion (end portion on the opposite side to the detection unit 300) of the center conductor 41a (joint) of the corresponding electric wire 41 is formed. The part 411) is electrically connected.

図示していないが、両接続端子３０１の間には、ノイズを抑制するための容量素子が接続されており、その容量素子と容量素子と接続されている部分の接続端子３０１とを覆うように、樹脂モールドにより形成された容量素子保護部３０２が設けられている。 Although not shown, a capacitive element for suppressing noise is connected between both connection terminals 301 so as to cover the capacitive element and the connection terminal 301 of the portion connected to the capacitive element. A capacitive element protection portion 302 formed by resin molding is provided.

２つの磁気センサ３０は、検出部３００がセンサ部３と磁気エンコーダ２との対向方向に重なるように配置されている。以下、２つの磁気センサ３０のうち、磁気エンコーダ２側に配置されている磁気センサ３０を第１磁気センサ３０ａと呼称し、磁気エンコーダ２から遠い側に配置されている磁気センサ３０を第２磁気センサ３０ｂと呼称する。両磁気センサ３０ａ，３０ｂの配置等の詳細については、後述する。 The two magnetic sensors 30 are arranged so that the detection unit 300 overlaps the sensor unit 3 and the magnetic encoder 2 in the opposing direction. Hereinafter, of the two magnetic sensors 30, the magnetic sensor 30 arranged on the magnetic encoder 2 side will be referred to as a first magnetic sensor 30a, and the magnetic sensor 30 arranged on the side far from the magnetic encoder 2 will be referred to as the second magnetic sensor 30a. It is called a sensor 30b. Details of the arrangement and the like of both magnetic sensors 30a and 30b will be described later.

ハウジング部３１は、磁気センサ３０とケーブル４の端部とを一括して覆う本体部３１０と、センサ部３をナックル９に固定するためのフランジ部３１１と、を一体に形成してなる。フランジ部３１１には、センサ部３をナックル９に固定するボルト９２（図１参照）を通すためのボルト穴３１２が形成されており、ボルト穴３１２には、当該ボルト穴３１２の内周面に沿うように、ボルト固定の際にフランジ部３１１の変形を抑制するための金属からなるカラー３１３が設けられている。 The housing portion 31 is integrally formed with a main body portion 310 that collectively covers the magnetic sensor 30 and the end portion of the cable 4, and a flange portion 311 for fixing the sensor portion 3 to the knuckle 9. The flange portion 311 is formed with a bolt hole 312 through which a bolt 92 (see FIG. 1) for fixing the sensor portion 3 to the knuckle 9 is inserted, and the bolt hole 312 is formed on the inner peripheral surface of the bolt hole 312. Along the line, a collar 313 made of metal is provided for suppressing deformation of the flange portion 311 when fixing the bolt.

ハウジング部３１の本体部３１０の先端部（ケーブル４の延出側と反対側の端部）における側面には、磁気エンコーダ２と対向する平坦な対向面３１４が形成されている。センサ部３は、この対向面３１４を磁気エンコーダ２と対向させた状態（回転軸線Ｏに平行な軸方向に対向させた状態）で、ナックル９に固定されている。 A flat facing surface 314 facing the magnetic encoder 2 is formed on a side surface of the main body portion 310 of the housing portion 31 (an end portion on the opposite side to the extension side of the cable 4). The sensor unit 3 is fixed to the knuckle 9 with the facing surface 314 facing the magnetic encoder 2 (facing with respect to the axial direction parallel to the rotation axis O).

ハウジング部３１としては、例えばＰＡ（ポリアミド）６１２や、ナイロン６６（ナイロンは登録商標）、ＰＢＴ（ポリブチレンテレフタレート）等からなるものを用いることができる。また、ハウジング部３１に用いる樹脂として、上記樹脂にガラスフィラーを混入させたものを用いることもできる。 As the housing portion 31, for example, PA (polyamide) 612, nylon 66 (nylon is a registered trademark), PBT (polybutylene terephthalate), or the like can be used. Further, as the resin used for the housing portion 31, a resin obtained by mixing glass filler with the above resin may be used.

（第１磁気センサ３０ａ及び第２磁気センサ３０ｂの配置等）
本実施の形態に係る回転検出装置１では、磁気エンコーダ２側に配置されている第１磁気センサ３０ａの検出部３００が、対向面３１４に対して傾くように配置されている。第１磁気センサ３０ａは、検出部３００の短辺方向（接続端子３０１の延出方向）が、対向面に対して傾くように配置されている。検出部３００の長辺方向は、対向面３１４に対して平行となるようにされる。また、第１磁気センサ３０ａの検出部３００は、接続端子３０１の延出側ほど対向面３１４から離れるように配置されている。 (Arrangement of the first magnetic sensor 30a and the second magnetic sensor 30b, etc.)
In the rotation detection device 1 according to the present embodiment, the detection unit 300 of the first magnetic sensor 30a arranged on the magnetic encoder 2 side is arranged so as to be inclined with respect to the facing surface 314. The first magnetic sensor 30a is arranged such that the short side direction of the detection unit 300 (the extending direction of the connection terminal 301) is inclined with respect to the facing surface. The long side direction of the detection unit 300 is made parallel to the facing surface 314. Further, the detection unit 300 of the first magnetic sensor 30a is arranged so as to be farther from the facing surface 314 on the extension side of the connection terminal 301.

第１磁気センサ３０ａの検出部３００を、対向面３１４に対して傾くように配置することにより、検出部３００における磁気検出素子の検出部３００を、対向面３１４により近づけることが可能になり、磁気検出素子の検知部Ｄと磁気エンコーダ２間の間隔をより小さくして、検出感度を向上させることができる。 By arranging the detection unit 300 of the first magnetic sensor 30a so as to be inclined with respect to the facing surface 314, the detection unit 300 of the magnetic detection element in the detection unit 300 can be brought closer to the facing surface 314, and The detection sensitivity can be improved by further reducing the distance between the detection unit D of the detection element and the magnetic encoder 2.

また、第１磁気センサ３０ａの検出部３００を、対向面３１４に対して傾くように配置することにより、検出部３００を対向面３１４に対して平行に配置した場合と比較して、ハウジング部３１の樹脂モールドの際に金型と検出部３００との間に樹脂が入り込みやすくなり、成形不良が発生しにくくなる。具体的には、図４に矢印Ａで示されるように、ハウジング部３１の樹脂モールドの際に、第１磁気センサ３０ａの検出部３００と金型５との間に、検出部３００と金型５間の間隔が広い側から狭い側へと（図示右側から左側へと）樹脂が流れ、第１磁気センサ３０ａの検出部３００と金型５との間に樹脂が入り込み易くなるため、成形不良が発生しにくくなる。なお、図４では図示を省略しているが、ハウジング部３１の樹脂モールドの際には、両磁気センサ３０ａ，３０ｂを樹脂製のホルダに保持させた状態で金型５にセットするとよい。 In addition, by disposing the detection unit 300 of the first magnetic sensor 30a so as to be inclined with respect to the facing surface 314, the housing unit 31 is provided as compared with the case where the detection unit 300 is arranged parallel to the facing surface 314. When the resin is molded, the resin easily enters between the mold and the detection unit 300, and molding defects are less likely to occur. Specifically, as shown by an arrow A in FIG. 4, when the resin molding of the housing portion 31 is performed, the detection unit 300 and the mold 5 are provided between the detection unit 300 of the first magnetic sensor 30 a and the mold 5. The resin flows from the side with a wide interval between the five to the narrow side (from the right side to the left side in the drawing), and the resin easily enters between the detection unit 300 of the first magnetic sensor 30a and the mold 5, resulting in defective molding. Is less likely to occur. Although not shown in FIG. 4, when the resin molding of the housing portion 31 is performed, it is preferable to set the magnetic sensors 30a and 30b in the mold 5 while being held by the resin holder.

また、本実施の形態では、容量素子保護部３０２が接続端子３０１の対向面３１４側に突出するように設けられているが、第１磁気センサ３０ａを傾斜して配置することにより、検出部３００を対向面３１４に近づけつつも、容量素子保護部３０２がハウジング部３１から露出（突出）してしまうことを抑制可能になる。 Further, in the present embodiment, the capacitive element protection section 302 is provided so as to project toward the facing surface 314 side of the connection terminal 301, but by arranging the first magnetic sensor 30a in an inclined manner, the detection section 300 is provided. It is possible to prevent the capacitive element protection portion 302 from being exposed (protruding) from the housing portion 31 while making the element close to the facing surface 314.

第１磁気センサ３０ａの検出部３００と対向面３１４との間隔（最小距離）ｄが小さすぎると、第１磁気センサ３０ａを傾けても成形不良が発生するおそれが生じるため、間隔ｄは０．５ｍｍ以上とすることが望ましい。本実施の形態では、容量素子保護部３０２と対向面３１４との間隔を、上述の間隔ｄと同等とすることで、容量素子保護部３０２と金型５間にも樹脂が入り込み易くし、成形不良をより生じにくくした。 If the distance (minimum distance) d between the detection unit 300 of the first magnetic sensor 30a and the facing surface 314 is too small, molding failure may occur even if the first magnetic sensor 30a is tilted. Therefore, the distance d is 0. It is desirable to set it to 5 mm or more. In the present embodiment, the distance between the capacitive element protection portion 302 and the facing surface 314 is set to be equal to the above-mentioned distance d, so that the resin easily enters between the capacitive element protection portion 302 and the mold 5, and the molding is performed. Made it more difficult for defects to occur

また、第１磁気センサ３０ａの検出部３００の対向面３１４に対する角度θが小さすぎると、検出部３００と金型５間に樹脂が入り込みにくくなるため、角度θは、３°以上とすることが望ましい。さらにまた、角度θが大きすぎると、磁気検出素子の検知部Ｄが対向面３１４から離れてしまい、検出感度が低下するおそれが生じるため、角度θは１０°以下とすることが望ましい。 Further, if the angle θ of the detection unit 300 of the first magnetic sensor 30a with respect to the facing surface 314 is too small, it becomes difficult for resin to enter between the detection unit 300 and the mold 5, so the angle θ may be set to 3° or more. desirable. Furthermore, if the angle θ is too large, the detection unit D of the magnetic detection element may be separated from the facing surface 314, and the detection sensitivity may be reduced. Therefore, the angle θ is preferably 10° or less.

回転検出装置１では、検出部３００に含まれる磁気検出素子は、検出部３００の厚さ方向及び接続端子３０１の延出方向に対して垂直な方向（図３（ｂ）における上下方向、検出部３００の長辺方向）の磁界を検出するように構成されている。そのため、検出部３００を対向面３１４に対して傾斜させた（検出部３００の短辺方向に傾斜させた）場合であっても、磁気検出素子における磁界の検出方向は対向面３１４に対して平行に維持される。 In the rotation detection device 1, the magnetic detection element included in the detection unit 300 has a direction perpendicular to the thickness direction of the detection unit 300 and the extending direction of the connection terminal 301 (the vertical direction in FIG. 3B, the detection unit). It is configured to detect a magnetic field in the long side direction of 300). Therefore, even when the detection unit 300 is tilted with respect to the facing surface 314 (tilted in the short side direction of the detection unit 300), the magnetic field detection direction of the magnetic detection element is parallel to the facing surface 314. Maintained at.

検出部３００は、その厚さ方向における中央よりも対向面３１４側に、磁気検出素子の検知部Ｄが位置するように構成されている。これにより、検知部Ｄをより対向面３１４に近づけることが可能になり、磁気検出素子の検知部Ｄと磁気エンコーダ２間の間隔をより小さくして、検出感度を向上させることができる。 The detection unit 300 is configured such that the detection unit D of the magnetic detection element is located closer to the facing surface 314 than the center in the thickness direction. As a result, the detection unit D can be brought closer to the facing surface 314, the distance between the detection unit D of the magnetic detection element and the magnetic encoder 2 can be made smaller, and the detection sensitivity can be improved.

また、回転検出装置１では、第２磁気センサ３０ｂは、その検出部３００が、第１磁気センサ３０ａの検出部３００に対して傾くように配置されている。本実施の形態では、第２磁気センサ３０ｂの検出部３００の対向面３１４に対する傾きが、第１磁気センサ３０ａの検出部３００の対向面３１４に対する傾き（角度θ）よりも小さくなっている。さらに詳細には、本実施の形態では、第２磁気センサ３０ｂの検出部３００が、対向面３１４に対して平行に配置されている。両磁気センサ３０ａ，３０ｂの検出部３００同士の間隔は、接続端子３０１の延出側からセンサ部３の先端側にかけて徐々に広がっている。 Further, in the rotation detection device 1, the second magnetic sensor 30b is arranged so that the detection unit 300 thereof is inclined with respect to the detection unit 300 of the first magnetic sensor 30a. In the present embodiment, the inclination of the detection unit 300 of the second magnetic sensor 30b with respect to the facing surface 314 is smaller than the inclination (angle θ) of the detection unit 300 of the first magnetic sensor 30a with respect to the facing surface 314. More specifically, in the present embodiment, the detection unit 300 of the second magnetic sensor 30b is arranged parallel to the facing surface 314. The distance between the detection units 300 of both magnetic sensors 30a and 30b gradually increases from the extension side of the connection terminal 301 to the tip side of the sensor unit 3.

また、第２磁気センサ３０ｂは、その接続端子３０１に折り曲げ部３０１ａを有している。本実施の形態では、第２磁気センサ３０ｂの接続端子３０１をクランク形状に折り曲げて折り曲げ部３０１ａを形成している。これにより、第２磁気センサ３０ｂの検出部３００をより対向面３１４に（第１磁気センサ３０ａの検出部３００側に）近づけつつも、第２磁気センサ３０ｂの容量素子保護部３０２が第１磁気センサ３０ａに干渉してしまうことを抑制可能になる。 Further, the second magnetic sensor 30b has a bent portion 301a at its connection terminal 301. In the present embodiment, the connection terminal 301 of the second magnetic sensor 30b is bent in a crank shape to form the bent portion 301a. As a result, while the detection unit 300 of the second magnetic sensor 30b is brought closer to the facing surface 314 (closer to the detection unit 300 side of the first magnetic sensor 30a), the capacitive element protection unit 302 of the second magnetic sensor 30b has the first magnetic field. It is possible to suppress the interference with the sensor 30a.

また、第２磁気センサ３０ｂの接続端子３０１にクランク状の折り曲げ部３０１ａを形成することで、接続端子３０１の端部（検出部３００と反対側の端部）をケーブル４の延出方向に対して平行とすることができる。これにより、電線４１の中心導体４１ａを無理に曲げずに配線することが可能になり、センサ部３内での配線レイアウトが容易になる。本実施の形態では、中心導体４１ａの端部に直線状の接合部４１１を設けており、接合端子３０１から接合部４１１の一部が突出するように構成されているため、中心導体４１ａを自由に曲げられる長さが比較的短くなるが、接続端子３０１の端部をケーブル４の延出方向に対して平行とすることで、中心導体４１ａを無理なく配線することが可能である。 Further, by forming a crank-shaped bent portion 301a in the connection terminal 301 of the second magnetic sensor 30b, the end portion of the connection terminal 301 (the end portion on the opposite side of the detection portion 300) with respect to the extension direction of the cable 4 is formed. Can be parallel. As a result, the center conductor 41a of the electric wire 41 can be wired without forcibly bending, and the wiring layout in the sensor unit 3 becomes easy. In the present embodiment, the linear joint portion 411 is provided at the end portion of the center conductor 41a, and the joint terminal 411 is configured so that a part of the joint portion 411 protrudes. Although the length to be bent is relatively short, the center conductor 41a can be reasonably wired by making the end of the connection terminal 301 parallel to the extending direction of the cable 4.

（変形例）
本実施の形態では、第２磁気センサ３０ｂの検出部３００を、第１磁気センサ３０ａの検出部３００に対して傾くように配置したが、これに限らず、第２磁気センサ３０ｂの検出部３００が、第１磁気センサ３０ａの検出部３００に対して平行に配置されていてもよい。これにより、第２磁気センサ３０ｂの検出部３００をより対向面３１４により近づけることが可能になり、磁気検出素子の検知部Ｄと磁気エンコーダ２間の間隔をより小さくして、第２磁気センサ３０ｂの検出感度を向上させることができる。 (Modification)
In the present embodiment, the detection unit 300 of the second magnetic sensor 30b is arranged so as to be inclined with respect to the detection unit 300 of the first magnetic sensor 30a, but the present invention is not limited to this, and the detection unit 300 of the second magnetic sensor 30b is not limited thereto. However, it may be arranged in parallel to the detection unit 300 of the first magnetic sensor 30a. This makes it possible to bring the detection unit 300 of the second magnetic sensor 30b closer to the facing surface 314, reduce the distance between the detection unit D of the magnetic detection element and the magnetic encoder 2, and reduce the second magnetic sensor 30b. The detection sensitivity of can be improved.

（実施の形態の作用及び効果）
以上説明したように、本実施の形態に係る回転検出装置１では、２つの磁気センサ３０のうち、磁気エンコーダ２側に配置されている第１磁気センサ３０ａの検出部３００が、対向面３１４に対して傾くように配置されている。これにより、第１磁気センサ３０ａの検出部３００をより対向面３１４により近づけることが可能になり、磁気検出素子の検知部Ｄと磁気エンコーダ２間の間隔をより小さくして、検出感度を向上させることができる。また、ハウジング部３１の樹脂モールドの際に、樹脂の流れがよくなるために、成形不良が発生しにくくなり、樹脂モールドの品質低下が抑制される。 (Operation and Effect of Embodiment)
As described above, in the rotation detection device 1 according to the present embodiment, the detection unit 300 of the first magnetic sensor 30a arranged on the magnetic encoder 2 side of the two magnetic sensors 30 is arranged on the facing surface 314. It is arranged to incline against. As a result, the detection unit 300 of the first magnetic sensor 30a can be brought closer to the facing surface 314, the distance between the detection unit D of the magnetic detection element and the magnetic encoder 2 can be made smaller, and the detection sensitivity can be improved. be able to. Further, when the resin molding of the housing portion 31 is performed, the flow of the resin is improved, so that the molding failure is less likely to occur, and the deterioration of the quality of the resin mold is suppressed.

（実施の形態のまとめ）
次に、以上説明した実施の形態から把握される技術思想について、実施の形態における符号等を援用して記載する。ただし、以下の記載における各符号等は、特許請求の範囲における構成要素を実施の形態に具体的に示した部材等に限定するものではない。 (Summary of Embodiments)
Next, the technical idea grasped from the embodiment described above will be described with reference to the reference numerals and the like in the embodiment. However, the reference numerals and the like in the following description are not intended to limit the constituent elements in the claims to the members and the like specifically shown in the embodiments.

［１］回転部材（１１）に取り付けられており、前記回転部材（１１）の回転軸を中心とした周方向に沿って複数の磁極が設けられている被検出部材（２）と、前記回転部材（１１）の回転に伴って回転しない固定部材（９）に取り付けられており、前記被検出部材（２）と対向して配置されているセンサ部（３）と、を備え、前記センサ部（３）は、前記被検出部材（２）からの磁界を検出する磁気検出素子を含む板状の検出部（３００）と、前記検出部（３００）から延出された接続端子（３０１）と、を有し、前記検出部（３００）が前記センサ部（３）と前記被検出部材（２）との対向方向に重なるように配置されている２つの磁気センサ（３０）と、前記２つの磁気センサ（３０）を一括して被覆するように設けられた樹脂モールドからなり、前記被検出部材（２）と対向する対向面（３１４）を有するハウジング部（３１）と、を有し、前記２つの磁気センサ（３０）のうち、前記被検出部材（２）側に配置されている第１磁気センサ（３０ａ）の前記検出部（３００）が、前記対向面（３１４）に対して傾くように配置されている、回転検出装置（１）。 [1] A detected member (2) attached to a rotating member (11) and provided with a plurality of magnetic poles along a circumferential direction around a rotation axis of the rotating member (11); The sensor unit (3) is attached to a fixed member (9) that does not rotate with the rotation of the member (11), and is disposed facing the detected member (2). (3) is a plate-shaped detection section (300) including a magnetic detection element for detecting a magnetic field from the detected member (2), and a connection terminal (301) extended from the detection section (300). And two magnetic sensors (30) arranged so that the detection part (300) overlaps in the opposing direction of the sensor part (3) and the detected member (2), and the two magnetic sensors (30). A housing part (31) made of a resin mold provided so as to cover the magnetic sensor (30) collectively, and having a facing surface (314) facing the detected member (2); Of the two magnetic sensors (30), the detection unit (300) of the first magnetic sensor (30a) arranged on the detected member (2) side is inclined with respect to the facing surface (314). A rotation detection device (1) arranged at.

［２］前記第１磁気センサ（３０ａ）の前記検出部（３００）は、前記接続端子（３０１）の延出側ほど前記対向面（３１４）から離れるように配置されている、［１］に記載の回転検出装置（１）。 [2] The detection unit (300) of the first magnetic sensor (30a) is arranged so as to be more distant from the facing surface (314) on the extension side of the connection terminal (301). The rotation detection device (1) described.

［３］前記検出部（３００）に含まれる前記磁気検出素子は、前記検出部（３００）の厚さ方向及び前記接続端子（３０１）の延出方向に対して垂直な方向の磁界を検出するように構成されており、前記第１磁気センサ（３０）の前記検出部（３００）は、前記磁気検出素子における磁界の検出方向が前記対向面（３１４）と平行になるように配置されている、［２］に記載の回転検出装置（１）。 [3] The magnetic detection element included in the detection unit (300) detects a magnetic field in a direction perpendicular to the thickness direction of the detection unit (300) and the extension direction of the connection terminal (301). The detection unit (300) of the first magnetic sensor (30) is arranged such that the magnetic field detection direction of the magnetic detection element is parallel to the facing surface (314). The rotation detection device (1) according to [2].

［４］前記検出部（３００）は、その厚さ方向における中央よりも前記対向面（３１４）側に、前記磁気検出素子の検知部（Ｄ）が位置するように構成されている、［１］または［２］に記載の回転検出装置（１）。 [4] The detection unit (300) is configured such that the detection unit (D) of the magnetic detection element is located closer to the facing surface (314) side than the center in the thickness direction thereof. ] Or the rotation detection apparatus (1) as described in [2].

［５］前記２つの磁気センサ（３０）のうち、前記被検出部材（２）から遠い側に配置されている第２磁気センサ（３０ｂ）は、その前記接続端子（３０１）に折り曲げ部（３０１ａ）を有している、［１］乃至［４］の何れか１項に記載の回転検出装置（１）。 [5] Of the two magnetic sensors (30), the second magnetic sensor (30b) arranged on the side farther from the detected member (2) has a bent portion (301a) at the connection terminal (301). ) The rotation detection device (1) according to any one of [1] to [4].

［６］前記２つの磁気センサ（３０）のうち、前記被検出部材（２）から遠い側に配置されている第２磁気センサ（３０ｂ）の前記検出部（３００）が、前記第１磁気センサ（３０ａ）の前記検出部（３００）に対して傾くように配置されている、［１］乃至［５］の何れか１項に記載の回転検出装置（１）。 [6] Of the two magnetic sensors (30), the detection unit (300) of the second magnetic sensor (30b) arranged on the side farther from the detected member (2) is the first magnetic sensor. The rotation detection device (1) according to any one of [1] to [5], which is arranged so as to be inclined with respect to the detection unit (300) of (30a).

［７］前記第２磁気センサ（３０ｂ）の前記検出部（３００）の前記対向面（３１４）に対する傾きが、前記第１磁気センサ（３０ａ）の前記検出部（３００）の前記対向面（３１４）に対する傾きよりも小さい、［６］に記載の回転検出装置（１）。 [7] The inclination of the detection part (300) of the second magnetic sensor (30b) with respect to the facing surface (314) is the facing surface (314) of the detection part (300) of the first magnetic sensor (30a). The rotation detection device (1) according to [6], which is smaller than the inclination with respect to FIG.

［８］前記第２磁気センサ（３０ｂ）の前記検出部（３００）が、前記対向面（３１４）に対して平行に配置されている、［６］または［７］に記載の回転検出装置（１）。 [8] The rotation detection device according to [6] or [7], wherein the detection unit (300) of the second magnetic sensor (30b) is arranged parallel to the facing surface (314). 1).

［９］前記２つの磁気センサ（３０）のうち、前記被検出部材（２）から遠い側に配置されている第２磁気センサ（３０ｂ）の前記検出部（３００）が、前記第１磁気センサ（３０ａ）の前記検出部（３００）に対して平行に配置されている、［１］乃至［５］の何れか１項に記載の回転検出装置（１）。 [9] Of the two magnetic sensors (30), the detection unit (300) of the second magnetic sensor (30b) arranged on the side farther from the detected member (2) is the first magnetic sensor. The rotation detection device (1) according to any one of [1] to [5], which is arranged in parallel to the detection unit (300) of (30a).

以上、本発明の実施の形態を説明したが、上記に記載した実施の形態は特許請求の範囲に係る発明を限定するものではない。また、実施の形態の中で説明した特徴の組合せの全てが発明の課題を解決するための手段に必須であるとは限らない点に留意すべきである。 Although the embodiments of the present invention have been described above, the embodiments described above do not limit the invention according to the claims. Further, it should be noted that not all combinations of the features described in the embodiments are essential to the means for solving the problems of the invention.

本発明は、その趣旨を逸脱しない範囲で適宜変形して実施することが可能である。例えば、上記実施の形態では、両磁気センサ３０ａ，３０ｂが、ノイズ抑制用の容量素子及び容量素子保護部３０２を有する場合について説明したが、容量素子及び容量素子保護部３０２は省略可能である。 The present invention can be appropriately modified and implemented without departing from the spirit of the present invention. For example, in the above-described embodiment, the case where both the magnetic sensors 30a and 30b have the noise suppression capacitive element and the capacitive element protection unit 302 has been described, but the capacitive element and the capacitive element protection unit 302 can be omitted.

また、上記実施の形態では、第１磁気センサ３０ａの接続端子３０１を直線状としたが、これに限らず、接続端子３０１が折り曲げ部を有していてもよい。これにより、接続端子３０１の端部（検出部３００と反対側の端部）をケーブル４の延出方向に対して平行とし、センサ部３内での配線レイアウト性をより高めることが可能になる。 Further, in the above embodiment, the connection terminal 301 of the first magnetic sensor 30a is linear, but the present invention is not limited to this, and the connection terminal 301 may have a bent portion. As a result, the end portion of the connection terminal 301 (the end portion on the side opposite to the detection portion 300) is made parallel to the extending direction of the cable 4, and the wiring layout within the sensor portion 3 can be further improved. ..

さらに、上記実施の形態では、センサ部３の先端部における側面に対向面３１４が形成されている場合について説明したが、これに限らず、センサ部３の先端面が対向面３１４であってもよい。この場合、回転軸線Ｏと平行な方向にケーブル４が延出されることになる。 Further, in the above-described embodiment, the case where the facing surface 314 is formed on the side surface of the tip portion of the sensor unit 3 has been described, but the present invention is not limited to this, and the tip surface of the sensor unit 3 may be the facing surface 314. Good. In this case, the cable 4 is extended in the direction parallel to the rotation axis O.

１…回転検出装置
２…磁気エンコーダ（被検出部材）
３…センサ部
３０…磁気センサ
３０ａ…第１磁気センサ
３０ｂ…第２磁気センサ
３００…検出部
３０１…接続端子
３０１ａ…折り曲げ部
３１…ハウジング部
３１４…対向面
４…ケーブル
９…ナックル（固定部材）
１１…内輪（回転部材） 1... Rotation detecting device 2... Magnetic encoder (member to be detected)
3... Sensor part 30... Magnetic sensor 30a... 1st magnetic sensor 30b... 2nd magnetic sensor 300... Detection part 301... Connection terminal 301a... Bending part 31... Housing part 314... Opposing surface 4... Cable 9... Knuckle (fixing member)
11... Inner ring (rotating member)

Claims (6)

回転部材に取り付けられており、前記回転部材の回転軸を中心とした周方向に沿って複数の磁極が設けられている被検出部材と、
前記回転部材の回転に伴って回転しない固定部材に取り付けられており、前記被検出部材と対向して配置されているセンサ部と、を備え、
前記センサ部は、
前記被検出部材からの磁界を検出する磁気検出素子を含む板状の検出部と、前記検出部から延出された接続端子と、を有し、前記検出部が前記センサ部と前記被検出部材との対向方向に離間しながら重なるように配置されている２つの磁気センサと、
前記２つの磁気センサを一括して被覆するように設けられた樹脂モールドからなり、前記被検出部材と対向する対向面を有するハウジング部と、
を有し、
前記２つの磁気センサのうち、前記被検出部材から近い側に配置されている第１磁気センサの前記検出部が、前記対向面に対して傾くように配置されており、
前記２つの磁気センサのうち、前記被検出部材から遠い側に配置されている第２磁気センサの前記検出部が、前記第１磁気センサの前記検出部に対して傾くように配置されており、
前記第１磁気センサの前記検出部は、前記接続端子の延出側ほど前記対向面から離れるように配置されているとともに、前記センサ部の先端側ほど前記第２磁気センサの前記検出部から離れるように配置されている
回転検出装置。 A member to be detected, which is attached to the rotating member and is provided with a plurality of magnetic poles along the circumferential direction about the rotation axis of the rotating member,
A sensor unit that is attached to a fixed member that does not rotate with the rotation of the rotating member, and that is arranged to face the member to be detected,
The sensor unit is
It has a plate-shaped detection unit including a magnetic detection element that detects a magnetic field from the detected member, and a connection terminal extended from the detection unit, and the detection unit is the sensor unit and the detected member. Two magnetic sensors that are arranged so as to overlap with each other while being separated in a direction opposite to
A housing part made of a resin mold provided so as to cover the two magnetic sensors collectively, and having a facing surface facing the detected member;
Have
Of the two magnetic sensors, the detecting portion of the first magnetic sensor, wherein disposed on a side closer to the detection member is disposed so as to be inclined with respect to the facing surface,
Of the two magnetic sensors, the detection unit of the second magnetic sensor arranged on the side far from the member to be detected is arranged to be inclined with respect to the detection unit of the first magnetic sensor,
The detection unit of the first magnetic sensor is arranged so as to be farther from the facing surface on the extension side of the connection terminal, and further away from the detection unit of the second magnetic sensor on the distal end side of the sensor unit. Detection device that is arranged like . 前記検出部に含まれる前記磁気検出素子は、前記検出部の厚さ方向及び前記接続端子の延出方向に対して垂直な方向の磁界を検出するように構成されており、
前記第１磁気センサの前記検出部は、前記磁気検出素子における磁界の検出方向が前記対向面と平行になるように配置されている、
請求項１に記載の回転検出装置。 The magnetic detection element included in the detection unit is configured to detect a magnetic field in a direction perpendicular to the thickness direction of the detection unit and the extending direction of the connection terminal,
The detection unit of the first magnetic sensor is arranged such that the magnetic field detection direction of the magnetic detection element is parallel to the facing surface.
The rotation detection device according to claim 1 . 前記検出部は、その厚さ方向における中央よりも前記対向面側に、前記磁気検出素子の検知部が位置するように構成されている、
請求項１または２に記載の回転検出装置。 The detection unit is configured such that the detection unit of the magnetic detection element is located closer to the facing surface side than the center in the thickness direction thereof,
The rotation detection device according to claim 1. 前記２つの磁気センサのうち、前記被検出部材から遠い側に配置されている第２磁気センサは、その前記接続端子に折り曲げ部を有している、
請求項１乃至３の何れか１項に記載の回転検出装置。 Of the two magnetic sensors, the second magnetic sensor arranged on the side far from the member to be detected has a bent portion at the connection terminal thereof.
The rotation detection device according to any one of claims 1 to 3 . 前記第２磁気センサの前記検出部の前記対向面に対する傾きが、前記第１磁気センサの前記検出部の前記対向面に対する傾きよりも小さい、
請求項１乃至４の何れか１項に記載の回転検出装置。 An inclination of the detection unit of the second magnetic sensor with respect to the facing surface is smaller than an inclination of the detection unit of the first magnetic sensor with respect to the facing surface.
The rotation detection device according to any one of claims 1 to 4 . 前記第２磁気センサの前記検出部が、前記対向面に対して平行に配置されている、
請求項５に記載の回転検出装置。 The detection unit of the second magnetic sensor is arranged in parallel to the facing surface,
The rotation detection device according to claim 5 .
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